Plastic articles suitable for electroless plating

Abstract

A plastic article in which a semi-cured or cured product of a curable resin composition comprising a mixture and/or a preliminary reaction product of (a) at least one cyanate compound selected from the group consisting of polyfunctional cyanate esters, prepolymers of said cyanate esters, coprepolymers of said cyanate esters and an amine and mixtures thereof, (b) at least one diene-type rubber and optionally (c) at least one compound selected from the group consisting of polyfunctional maleimides, prepolymers of the maleimides or coprepolymers of the maleimides and an amine is formed on a plastic substrate is disclosed.

What is claimed is: 
     
       1. A plastic article for electroless plating in which a semi-cured or cured product of a curable resin composition comprises: (a) at least one cyanate ester compound selected from the group consisting of (1) a polyfunctional cyanate ester monomer,   (2) a homoprepolymer of one or more cyanate esters of (1), and   (3) a coprepolymer of (1) and an amine, and     (b) at least one diene-type rubber, said composition including a mixture of components (a) and (b), a preliminary reaction product of components (a) and (b), or the combination of said mixture and said preliminary reaction product, is formed on a plastic substrate.   
     
     
       2. The plastic article as defined in claim 1 wherein the cyanate ester is selected from the group consisting of 1,3-, 1,4-dicyanatobenzene; 1,3,5-tricyanatobenzene; 1,3-, 1,4-, 1,6-, 1,8-, 2,6- or 2,7-dicyanatonaphthalene; 1,3,6-tricyanatonaphthalene; 4,4'-dicyanatobiphenyl; bis(4-cyanatophenyl)-methane; 2-2-bis(4-cyanatophenyl)propane, 2,2-bis(3,5-dichloro-4-cyanatophenyl)propane, 2,2-bis(3,5-dibromo-4-cyanatophenyl)-propane; bis(4-cyanatophenyl)ether; bis(4-cyanatophenyl)-thioether; bis(4-cyanatophenyl)sulfone; tris(4-cyanatophenyl)-phosphite; tris(4-cyanatophenyl)phosphate; bis(3-chloro-4-cyanatophenyl)methane; cyanated novolak; derived from novolak cyanated bisphenol type polycarbonate oligomer derived from bisphenol type polycarbonate oligomer and mixture thereof. 
     
     
       3. The plastic article as defined in claim 1 wherein component (b) is selected from the group consisting of natural rubbers, butadiene rubber, chloroprene rubber, isoprene rubber, butadiene-acrylonitrile copolymer, butadieneacrylonitrile-isoprene terpolymer, butadiene-styrene copolymer, anionic block copolymer of butadiene and styrene, polybutadiene, butadiene-acrylonitrile copolymer having hydroxyl group or carboxyl group at its end position, and lower molecular polybutadiene, lower molecular polyisoprene, lower molecular polychloroprene and thermal decomposed natural rubbers not having any functional group at its end position. 
     
     
       4. The plastic article as defined in claim 1 wherein the ratio by weight of component (a) to component (b) is between 99:1 to 1:99. 
     
     
       5. The plastic article as defined in claim 1 wherein the ratio by weight of component (a) to component (b) is between 95:5 to 20:80. 
     
     
       6. The plastic article as defined in claim 1 wherein the plastic substrate is reinforced or non-reinforced. 
     
     
       7. The plastic article as defined in claim 1 wherein the material of the plastic substrate is selected from the group consisting of phenol resin, melamine resin, epoxy resin, unsaturated polyester resin, isocyanate resin, diallyl phthalate resin, silicone resin, acrylic resin, alkyd resin, 1,2-polybutadiene resin, cyanate resin, polyimide resin, resins modified from these resins, polyimide, polyamideimide, polyhydantoin resin, polyparabanic acid, polyphenylenesulfide, crosslinked network polyethylene, nylon, polyphenylene ether, polycarbonate, and polysulfone. 
     
     
       8. A plastic article for electroless plating in which a semi-cured or cured product of a curable resin composition comprises: (a) at least one cyanate ester compound selected from the group consisting of (1) a polyfunctional cyanate ester monomer,   (2) a homoprepolymer of one or more cyanate esters of (1), and   (3) a coprepolymer of (1) and an amine,     (b) at least one diene-type rubber, and   (c) at least one maleimide compound selected from the group consisting of: (1) a polyfunctional maleimide,   (2) a homoprepolymer of one or more maleimides of (1), and   (3) a coprepolymer of (1) and an amine, said composition including a mixture of components (a), (b) and (c), a preliminary reaction product of components (a), (b) and (c), the combination of said mixture and said preliminary reaction product, the combination of (a) and the preliminary reaction product of (b) and (c), the combination of (b) and the preliminary reaction product of (a) and (c), or the combination of (c) and the preliminary reaction product of (a) and (b), is formed on a plastic substrate.       
     
     
       9. The plastic article as defined in claim 8 wherein the cyanate ester is selected from the group consisting of 1,3-, 1,4-dicyanatobenzene; 1,3,5-tricyanatobenzene; 1,3-, 1,4-, 1,6-, 1,8-, 2,6- or 2,7-dicyanatonaphthalene; 1,3,6-tricyanatonaphthalene; 4,4'-dicyanatobiphenyl; bis(4-cyanatophenyl)methane; 2,2-bis(4-cyanatophenyl)propane, 2,2-bis(3,5-dichloro-4-cyanatophenyl)propane, 2,2-bis(3,5-dibromo-4-cyanatophenyl)propane; bis(4-cyanatophenyl)ether; bis(4-cyanatophenyl)thioether; bis(4-cyanatophenyl)sulfone; tris(4-cyanatophenyl)phosphite; tris(4-cyanatophenyl)phosphate; bis(3-chloro-4-cyanatophenyl)methane; cyanated novolak derived from novolak; cyanated bisphenol type polycarbonate oligomer derived from bisphenol type polycarbonate oligomer and mixture thereof. 
     
     
       10. The plastic article as defined in claim 8 wherein component (b) is selected from the group consisting of natural rubbers, butadiene rubber, chloroprene rubber, isoprene rubber, butadiene-acrylonitrile copolymer, butadieneacrylonitrile-isoprene terpolymer, butadiene-styrene copolymer, anionic block copolymer of butadiene and styrene, polybutadiene butadiene-acrylonitrile copolymer having hydroxyl group or carboxyl group at its end position, and lower molecular polybutadiene, lower molecular polyisoprene, lower molecular polychloroprene and thermal decomposed natural rubbers not having any functional group at its end position. 
     
     
       11. The plastic article as defined in claim 8 wherein the plastic substrate is reinforced or non-reinforced. 
     
     
       12. The plastic article as defined in claim 8 wherein the material of the plastic substrate is selected from the group consisting of phenol resin, melamine resin, epoxy resin, unsaturated polyester resin, isocyanate resin, diallyl phthalate resin, silicone resin, acrylic resin, alkyd resin, 1,2-polybutadiene resin, cyanate resin, polyimide resin, resins modified from these resins, polyimide, polyamideimide, polyhydantoin resin, polyparabanic acid polyphenylenesulfide-crosslinked network polyethylene, nylon, polyphenylene ether, polycarbonate, and polysulfone. 
     
     
       13. The plastic article as defined in claim 8 wherein the polyfunctional maleimide is selected from the group consisting of 1,3- or 1,4-dimaleimido benzene, 1,3- or 1,4-bis(maleimidomethylene)benzene, 1,3- or 1,4-dimaleimido cyclohexane, 1,3- or 1,4-bis(maleimidomethylene)cyclohexane, 4,4'-dimaleimido biphenyl, bis(4-maleimidophenyl)methane, bis(4-maleimidophenyl)ether, bis(4-maleimidophenyl)sulfone, bis(4-maleimido-3-methylphenyl)methane, bis(4-maleimido-3-chlorophenyl)methane, bis(4-maleimido-3,5-dimethylphenyl)methane, 2,2-bis(4-maleimido-3-methylphenyl)propane, 2,2-bis(4-maleimido-3,5-dibromophenyl)propane, bis(4-maleimidophenyl)-phenylmethane, 3,4-dimaleimidophenyl-4'-maleimidophenylmethane, 1,1-bis(4-maleimidophenyl)-1-phenyl-methane, and maleimido derived from melamine, and maleimide derived from addition product of formalin and an aniline in which benzene rings of two or more aniline bond through methylene group.